Studio Reference Amplifier

[apexaudio]

My second built of SR200...

Nice work

 

[Arif Budiyanto]

nice "C input" mas Arif like GC series
give priority to sound quality

Thank you my best friend...Please drop by when you go home...

 

[Arif Budiyanto]

Nice work

Thank you so much for sharing and letting me try your design, Sir....
Wish you all the best

 

[SERGIODS]

My second built of SR200...

Pcb what did you use?, Upload the link "please" : D

 

[Arif Budiyanto]

Pcb what did you use?, Upload the link "please" : D

I am very sorry...I am afraid I can not. I just bought my pcb from pcb maker...so just got the pcbs only.. I ordered that pcb lay out to fit to all of parts that I already have them in my drawer.

Best Regards,
Arif B

 

[wiljj78]

Tanks a lot for kind words , I'm glade to help you Apexaudio and viki_v2 . I have modified , an old PCB to fit Sanken output transistors . and PSU
Regards Alex .

Hi ALex mm,

Thanks a lot for sharing the new design that fit Sanken, Please share us the PCB layout for Sanken.

Look forward and many thanks

 

[wiljj78]

Dear Apex,

I have 4 pcs. of 28VAC toroidal Trafo 300VA each, can i use those 4 in series to have 55VAC w/ CT to supply stereo of SR200 or B500??
I started builing B500 for sub with most of the component installed and will be followed by SR200 for mid, high. Please advise if those trafo's are usefull for these amps.

I will share some pics as soon as i have all components on.

Thanks

 

[apexaudio]

Dear Apex,

I have 4 pcs. of 28VAC toroidal Trafo 300VA each, can i use those 4 in series to have 55VAC w/ CT to supply stereo of SR200 or B500??
I started builing B500 for sub with most of the component installed and will be followed by SR200 for mid, high. Please advise if those trafo's are usefull for these amps.

I will share some pics as soon as i have all components on.

Thanks

Yes, you can use 4 identical transformers in series to have 2x55vac for SR200 or B500.

 

[wiljj78]

Yes, you can use 4 identical transformers in series to have 2x55vac for SR200 or B500.

Woww.. thanks a lot for your swift response..

 

[Junie]

Hi Miles,

I cannot find BC560 for Q1, Q2, Q10. Can i use BC556?

Thanks
Junie

 

[Junie]

SR200 V3.1 on progress.

 

[apexaudio]

Hi Miles,

I cannot find BC560 for Q1, Q2, Q10. Can i use BC556?

Thanks
Junie

Yes, you can use BC556 or BC557

 

[44250]

G R E A T ! ! !

SR200 V3.1 on progress.

the best looking EVER!

 

[Junie]

Thanks Miles, I got BC560 replaced by BC556 .

44250, thanks for a compliment .

Help me decide which heatsink to use.

The big one is a bit overkill I think and the small one is not enough maybe

Ty,
Junie

 

[masood]

dear junie
your work is fantastic,in dubai from whera you get spare parts.i have one styroflex type of capacitor indicated as 10000 250 v +_10/ how can i know this value is micro farad or kpf ?

 

[44250]

Use capacity-meter to be sure.

 

[Junie]

Masood kaise ho?

Some parts from Farnell through DGM, others from local store here in dubai. Post a pics of the caps so we can check.

 

[ashok]

dear junie
....i have one styroflex type of capacitor indicated as 10000 250 v +_10/ how can i know this value is micro farad or kpf ?

Looks like it is 10000pF. That's 0.01uF .Styroflex usually are lower value caps.
A picture with something else to judge it's size might help.
I'm used to seeing only low value styroflex......below 0.01uF. Used up to 4700pF and so this could be 10,000pF. This is blind guess work !

Use a capacitance meter and you'll get the correct value.

 

[Junie]

Ok during my spare time in the office I made a rough draft for my SR200, Miles let me know your toughts about it.

BR,
Junie

 

[joexswj]

my first SR200, use layout from Mr.Alex.
thanks Mr.Mile and Mr.Alex.....